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Pharmaceutical Impurity Reference Standards

Process impurities, degradation products and genotoxic impurity reference standards with full characterization.

Aciclovir EP Impurity G structure

Aciclovir EP Impurity G

CAS: 75128-73-3

In Stock>95%

Acyclovir Impurity O structure

Acyclovir Impurity O

CAS: 2190509-40-9

In StockTechnical Grade

Acyclovir Identification Reference (API& EP Impurity C & EP Impurity I Mixture) structure

Acyclovir Identification Reference (API& EP Impurity C & EP Impurity I Mixture)

CAS: CATO-C4X-101027

In Stock97%+

Aciclovir Impurity 29 structure

Aciclovir Impurity 29

CAS: CATO-C4X-101029

In Stock>95%

Aciclovir EP Impurity F structure

Aciclovir EP Impurity F

CAS: 110104-37-5

In Stock>95%

Aciclovir Impurity 30 structure

Aciclovir Impurity 30

CAS: 59277-91-7

In Stock97%+

Acyclovir Impurity 31 structure

Acyclovir Impurity 31

CAS: CATO-C4X-101031

In Stock97%+

Acyclovir Impurity 32 structure

Acyclovir Impurity 32

CAS: 1195518-98-9

In Stock>95%

Aciclovir Impurity 33 structure

Aciclovir Impurity 33

CAS: CATO-C4X-101033

In Stock97%+

Aciclovir Impurity 34 structure

Aciclovir Impurity 34

CAS: CATO-C4X-101034

In Stock97%+

Aciclovir Impurity 35 structure

Aciclovir Impurity 35

CAS: CATO-C4X-101035

In Stock97%+

Aciclovir Impurity 37 structure

Aciclovir Impurity 37

CAS: CATO-C4X-101037

In Stock97%+

Aciclovir Impurity Q structure

Aciclovir Impurity Q

CAS: CATO-C4X-101038

In Stock>95%

Aciclovir Impurity 39 structure

Aciclovir Impurity 39

CAS: 1417988-85-2

In Stock>95%

Aciclovir Impurity 40 structure

Aciclovir Impurity 40

CAS: 97151-29-6

In Stock>95%

Aciclovir Impurity 41 structure

Aciclovir Impurity 41

CAS: CATO-C4X-101041

In Stock97%+

Acyclovir Impurity 5 structure

Acyclovir Impurity 5

CAS: 19962-37-9

In Stock>95%

Aciclovir EP Impurity M structure

Aciclovir EP Impurity M

CAS: 91702-60-2

In Stock>95%

Acyclovir EP Impurity H structure

Acyclovir EP Impurity H

CAS: 133186-23-9

In Stock97%+

Aciclovir EP Impurity J structure

Aciclovir EP Impurity J

CAS: 166762-90-9

In Stock>95%

Oxiracetam Impurity 1 structure

Oxiracetam Impurity 1

CAS: 77191-37-8

In Stock>95%

Oxiracetam Impurity 10 structure

Oxiracetam Impurity 10

CAS: 21954-96-1

In Stock>95%

Oxiracetam Impurity 11 structure

Oxiracetam Impurity 11

CAS: 870695-39-9

In Stock97%+

Oxiracetam Impurity 12 structure

Oxiracetam Impurity 12

CAS: 88-00-6

In Stock>95%

Oxiracetam Impurity 14 structure

Oxiracetam Impurity 14

CAS: 24587-49-3

In Stock97%+

Oxiracetam Impurity 15 structure

Oxiracetam Impurity 15

CAS: 89490-41-5

In Stock97%+

Oxiracetam Impurity 17 structure

Oxiracetam Impurity 17

CAS: 25747-41-5

In Stock>95%

Oxiracetam Impurity 18 structure

Oxiracetam Impurity 18

CAS: 142274-08-6

In Stock>95%

Oxiracetam Impurity 2 structure

Oxiracetam Impurity 2

CAS: 85614-52-4

In Stock97%+

Oxiracetam Impurity 21 structure

Oxiracetam Impurity 21

CAS: 85153-60-2

In Stock97%+

Oxiracetam impurity 22 structure

Oxiracetam impurity 22

CAS: CATO-C4X-101122

In Stock97%+

Oxiracetam Impurity 3 structure

Oxiracetam Impurity 3

CAS: 62613-81-4

In Stock97%+

Oxiracetam Impurity 4 structure

Oxiracetam Impurity 4

CAS: 62833-66-3

In Stock>95%

Oxiracetam Impurity 5 structure

Oxiracetam Impurity 5

CAS: 120428-80-0

In Stock>95%

Oxiracetam Impurity 8 structure

Oxiracetam Impurity 8

CAS: 68108-18-9

In Stock>95%

Oxiracetam Impurity 9 structure

Oxiracetam Impurity 9

CAS: 142274-07-5

In Stock97%+

Baclofen EP Impurity A structure

Baclofen EP Impurity A

CAS: 22518-27-0

In Stock>95%

Baclofen impurity 10 structure

Baclofen impurity 10

CAS: 28311-33-3

In Stock>95%

Baclofen impurity 11 structure

Baclofen impurity 11

CAS: CATO-C4X-101211

In Stock>95%

Baclofen impurity 12 structure

Baclofen impurity 12

CAS: 232597-00-1

In Stock>95%

Baclofen impurity 13 structure

Baclofen impurity 13

CAS: CATO-C4X-101213

In Stock>95%

Baclofen EP Impurity C (Mixture of Diastereomers) structure

Baclofen EP Impurity C (Mixture of Diastereomers)

CAS: 2726264-10-2

In Stock>95%

Baclofen impurity 15 structure

Baclofen impurity 15

CAS: CATO-C4X-101215

In Stock>95%

Baclofen impurity 16 structure

Baclofen impurity 16

CAS: 84803-73-6

In Stock>95%

Baclofen impurity 17 structure

Baclofen impurity 17

CAS: 114703-75-2

In Stock97%+

Baclofen impurity 18 structure

Baclofen impurity 18

CAS: CATO-C4X-101218

In Stock97%+

Baclofen impurity 19 structure

Baclofen impurity 19

CAS: 940-62-5

In Stock97%+

Baclofen EP Impurity B structure

Baclofen EP Impurity B

CAS: 1141-23-7

In Stock>95%

Baclofen impurity 20 structure

Baclofen impurity 20

CAS: 137310-15-7

In Stock97%+

Baclofen impurity 21 structure

Baclofen impurity 21

CAS: CATO-C4X-101221

In Stock97%+

Baclofen impurity 22 structure

Baclofen impurity 22

CAS: 55591-37-2

In Stock97%+

Baclofen impurity 23 structure

Baclofen impurity 23

CAS: 84803-46-3

In Stock97%+

Baclofen impurity 24 structure

Baclofen impurity 24

CAS: 28311-34-4（Free Base）

In Stock>95%

Baclofen impurity 25 HBr structure

Baclofen impurity 25 HBr

CAS: 28311-44-6（free base）

In Stock>95%

Baclofen impurity 26 structure

Baclofen impurity 26

CAS: CATO-C4X-101226

In Stock>95%

Baclofen impurity 28 structure

Baclofen impurity 28

CAS: CATO-C4X-101228

In Stock>90%

Baclofen impurity 29 structure

Baclofen impurity 29

CAS: CATO-C4X-101229

In Stock>90%

Baclofen EP Impurity C structure

Baclofen EP Impurity C

CAS: 35271-74-0

In Stock97%+

Baclofen impurity 30 structure

Baclofen impurity 30

CAS: CATO-C4X-101230

In Stock>90%

Baclofen impurity 31 structure

Baclofen impurity 31

CAS: CATO-C4X-101231

In Stock>90%

Baclofen impurity 32 structure

Baclofen impurity 32

CAS: CATO-C4X-101232

In Stock>90%

Baclofen Impurity 33 structure

Baclofen Impurity 33

CAS: 294194-13-1

In Stock97%+

Baclofen Impurity 34 Hydrochloride structure

Baclofen Impurity 34 Hydrochloride

CAS: 1078-21-3（free base）

In Stock>95%

Baclofen Impurity 35 structure

Baclofen Impurity 35

CAS: CATO-C4X-101235

In Stock>95%

Baclofen Impurity 36 structure

Baclofen Impurity 36

CAS: CATO-C4X-101236

In Stock>95%

Baclofen Impurity 37 structure

Baclofen Impurity 37

CAS: CATO-C4X-101237

In Stock>95%

Baclofen Impurity 38 structure

Baclofen Impurity 38

CAS: CATO-C4X-101238

In Stock>95%

Baclofen Impurity 39 structure

Baclofen Impurity 39

CAS: CATO-C4X-101239

In Stock>95%

Baclofen impurity 4 structure

Baclofen impurity 4

CAS: 159112-23-9

In Stock97%+

Baclofen Impurity 40 structure

Baclofen Impurity 40

CAS: CATO-C4X-101240

In Stock>95%

Baclofen Impurity 41 structure

Baclofen Impurity 41

CAS: 159156-84-0

In Stock97%+

Baclofen impurity 42 structure

Baclofen impurity 42

CAS: 101466-69-7

In Stock97%+

Baclofen impurity 43 structure

Baclofen impurity 43

CAS: CATO-C4X-101243

In Stock97%+

Baclofen impurity 44 structure

Baclofen impurity 44

CAS: CATO-C4X-101244

In Stock97%+

Baclofen impurity 45 structure

Baclofen impurity 45

CAS: CATO-C4X-101245

In Stock97%+

Baclofen Impurity 46 structure

Baclofen Impurity 46

CAS: CATO-C4X-101246

In Stock97%+

Baclofen Impurity 47 structure

Baclofen Impurity 47

CAS: CATO-C4X-101247

In Stock97%+

Baclofen Impurity 48 structure

Baclofen Impurity 48

CAS: CATO-C4X-101248

In Stock97%+

Baclofen Impurity 49 structure

Baclofen Impurity 49

CAS: CATO-C4X-101249

In Stock97%+

Baclofen Impurity 50 structure

Baclofen Impurity 50

CAS: CATO-C4X-101250

In Stock97%+

Baclofen Impurity 51 structure

Baclofen Impurity 51

CAS: 947583-11-1（Free Base）

In Stock97%+

Baclofen EP Impurity H structure

Baclofen EP Impurity H

CAS: CATO-C4X-101252

In Stock97%+

Baclofen Impurity 53 structure

Baclofen Impurity 53

CAS: CATO-C4X-101253

In Stock97%+

Baclofen Impurity 54 structure

Baclofen Impurity 54

CAS: CATO-C4X-101254

In Stock97%+

Baclofen Impurity 5 structure

Baclofen Impurity 5

CAS: 1053068-98-6

In Stock97%+

Baclofen Impurity 57 structure

Baclofen Impurity 57

CAS: CATO-C4X-101257

In Stock97%+

Baclofen Impurity 58 structure

Baclofen Impurity 58

CAS: CATO-C4X-101258

In Stock97%+

Baclofen Impurity 59 structure

Baclofen Impurity 59

CAS: CATO-C4X-101259

In Stock97%+

Baclofen impurity 6 structure

Baclofen impurity 6

CAS: CATO-C4X-10126

In Stock97%+

Baclofen Impurity 60 structure

Baclofen Impurity 60

CAS: CATO-C4X-101260

In Stock97%+

Baclofen Impurity 61 structure

Baclofen Impurity 61

CAS: CATO-C4X-101261

In Stock97%+

Baclofen Impurity 62 structure

Baclofen Impurity 62

CAS: CATO-C4X-101262

In Stock97%+

Baclofen Impurity 63 structure

Baclofen Impurity 63

CAS: CATO-C4X-101263

In Stock97%+

Baclofen Impurity 64 structure

Baclofen Impurity 64

CAS: CATO-C4X-101264

In Stock97%+

Baclofen Impurity 65 structure

Baclofen Impurity 65

CAS: CATO-C4X-101265

In Stock97%+

Baclofen Impurity 66 structure

Baclofen Impurity 66

CAS: CATO-C4X-101266

In Stock97%+

Baclofen Impurity 67 structure

Baclofen Impurity 67

CAS: CATO-C4X-101267

In Stock97%+

Baclofen Impurity 68 structure

Baclofen Impurity 68

CAS: CATO-C4X-101268

In Stock97%+

Baclofen Impurity 69 structure

Baclofen Impurity 69

CAS: CATO-C4X-101269

In Stock97%+

Baclofen impurity 7 structure

Baclofen impurity 7

CAS: 103857-58-5

In Stock>95%

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